110 years ago today, on May 9, 1915 (March 26, 1915 lunar calendar), Yuan Shikai accepted the "21 Articles" that humiliated the country. Representatives of China and Japan took a photo when the "21 Articles" were signed. On May 9, 1915, Yuan Shikai's government accepted the Japanese government's ultimatum and admitted the humiliating "21 Articles". Since the "21 Articles" negotiations between China and Japan, China has been leaking the content of the negotiations in order to touch the relevant Allied powers and let them put pressure on Japan. However, the Allied powers were worried that Japan would negotiate peace with Germany, and at the same time took into account their own interests in China. They did not interfere in Japan's actions, but only forced Japan to delete the content that threatened other countries through international pressure. Due to the loss of the support of the foreign powers and the lure of the Japanese government to support the monarchy, Yuan Shikai agreed to accept the "Twenty-One Articles". On the afternoon of the 8th, Yuan Shikai called a meeting at the presidential palace, and the government officials all pandered to Yuan Shikai's opinion. Only Duan Qirui said that he would resist by force, but Yuan Shikai refused because of his insufficient national strength. On the 25th, Lu Zhengxiang, the Chinese representative, and Rizhiyi, the Japanese representative, signed the "Sino-Japanese Treaty" and exchanged letters in Beijing. As soon as the news of the Yuan government's acceptance of the ultimatum came out, the public was furious, and the whole country regarded it as a great humiliation. Patriotic groups in various cities rallied one after another to refuse to recognize the "Twenty-One Articles" and vow national humiliation. The National Assembly was held in Shanghai from all walks of life, and tens of thousands of Young students from all over the world are particularly angry. Some commit suicide in anger, some write blood letters with severed fingers, and some ask to join the army and ask Ying to kill the enemy. The National Education Federation has decided that all schools will observe May 9 as "National Humiliation Day" every year. Students in schools in Beijing have decided to recite the ultimatum every day after class to show that they will not forget national humiliation. Then, anti-Japanese movements broke out in Hankou, Zhenjiang, Hanyang, Fuzhou and other places. On May 13, Japanese overseas Chinese in Hankou prepared to hold a lantern-raising ceremony to celebrate Japan's "diplomatic victory". Local students and businesspeople were furious and rallied to destroy Japanese shops. On May 24, the Shanghai National LGBT Association and other groups held a national assembly on the new stage of the nine-acre land in the city, "collecting public opinions and telegraphs to ask the central government to stop signing." Seven or eight thousand people attended the meeting. Zheng Rucheng sent military police to the scene to suppress it. The delegates of the conference went to the manufacturing bureau to express their opinions, demanding that Dianda "the government break the contract and strive for it," and was detained in the camp. The next day, the conference was still held in the nine-acre land, and Zheng Rucheng sent military police to "suppress and prevent resistance." Mao Zedong inscribed on the cover of the "Disgrace Article" published by Hunan First Normal University: "On May 7th, the Republic of China was a humiliation, why did you take revenge? I am a student." A blood letter against the "Twenty-One Articles" published in The Times: "May 9th will never be forgotten."